Finding the Fourth Proportional to 695,071.98, 958,976.28 and 389,103.30

Step by Step Solution

1. Step 1: Write the proportion equation
   695,071.98 : 958,976.28 = 389,103.30 : x
2. Step 2: Convert to fraction form
   695,071.98/958,976.28 = 389,103.30/x
3. Step 3: Cross multiply
   695,071.98x = 958,976.28 × 389,103.30
4. Step 4: Simplify right side
   695,071.98x = 373,140,835,169.72
5. Step 5: Solve for x
   x = 373,140,835,169.72/695,071.98
6. Step 6: Final answer
   x = 536,837.69